Photographic lighting unit



Sept. 20, 1949. E. B. NOEL 2,482,430

PHOTOGRAPHIC LIGHTING UNIT Filed Dec. 6, 1945 INVENTOR: EDWARD B. NOEL, BY '1 jJ duldll ww Has ATTORNEY Patented Sept. 20, 1949 enoro ee u omm Cleveland Heights,

signer to General Electric Company a corpora- Edward 3. Noel,

tlon-of New York ohm App ation December- 6, 1 4. S r a 633.313 2 Claims; (01. 240 -43) M nvention el t s. tdiieht s equ men and pa icu ar y to suc eq p en iun i g lumi ion for taking photo raphsl ightin equ nment'c mpr ing a ease cth on ucti u e orrcv dihe a fla hv o ht or t k a nhc qeranh'ahd c nde ent lamp or r idin light. to ia l ate io sihs th camera before eatin the ph t gra h s d s osed in h Uni d States Patents 2 21 .6 and 2,277,698, which issued March 31434 2 T flash tub and he candescent amp are Perm n n combined. in a single unit and their fields of" illumination have approximately the same center in the patented structure. s that by thelight from the incandescent lampv the photographer may judge where the light from the flash tube will fall when the hoto raph is taken. In the copending application Serial No. 503,968, filed September 20, 1943,, issued; as .Patent No.

2,459,607, on-May 10, 1949,.and assigned to the assignee. of this application, Paul B. Davis. and I have disclosed a similar. unit in, which the shorter-lived incandescent lamp may be replaced when it has become inoperative so that the more expensive and longer=lived flash tube may be used until the end oi its life. I The size of the bulb of the incandescent lamp which may be used in such. units is limited by the size of the flash tube which is. as small as possible and is usually in surrounding the incandescent mounting about thefocus of a light concentrating reflector. This limitation on the bulb size restricts the size of thef larnentand thus limits he amoun oi l ght wh may he roduced by the incandescent lamp. Further; it the filament oi the incandescent lamp produces too much heat the flash tube may'mis-fire, that is, fail to start. I-Iigherlighting intensities iron: the incandescent lamp are desirable in order to iacilitatefocusing the-camera. I 7

An object of my invention is to provide a lighting unit comprising a flash tube" and an incandescent lamp which provides a higher level of illumination from the incandescent lamp; for focusing the camera while retaining the advantages flowing from the same source positioning of the different types of illuminants. Another object of my invention is to provide such a lamp unit in which the size of the shorter-lived incandescent lamp is not limited by the flash tube. Further objects and advantages of the invention will appear from the following detailed description of species thereof and from the appended claims.

the form of a helix f lamp bulb for gravity.

n the. drawin ac om an in a ormihe art; i h s specif cation ven o s show ih hichhis- .1. a iro te eva t cha vi w-cfmynew li h n unit Fla? a ct ona vie when aloha th ine o 1 ct i 1 and sh wihsithe lamps ihl and Flu is a. a m tary. .side'elevat ohal w of, part of, thel ehtihe i l As. shown hi he dra in li h n n t come prises a pair of ruminants or lamps, i. andl, on includ ng. n candesc nt fi amen 5 and t oth r aflas tu e 4-, flhelamns l and Z are mounted s d -br-side n. a elon ated ha l w, sheet me al hol e o hcu ihst wh has a transverse yeateh ihe h a hetcr a 6. mi cte mg outwardl h rn. .Q' its sid nd ch s pi dv t a vertical supporting p st r standard 1. .Th hous n thus may be tilted in. e ther d c io ire-ma. hqriz. t unca on to. ove th r. ama l o nto. he tio directl abo e the Po orexam lah o in 5-way be mov d f m the si qhinh eh i s o in 11 lines in. Fig. 1 Qt. thedrawing with the incane descent lamp 2 cent v H red above the post], to the positionshown in light broken lines-in Fig. 1 with the lamp 1 includ hg-thefiashtube 4 cen; teredabove. the, post 1 Thclampunit ;also:com-. prises means tohold or fix; the housing din-position with either lamp to lamp} centered alcove the-post. This means, shown inFig. 2-, comprises a stationaryrod 8 projecting upwardfrom the top of the'post and engaging a longitudinally extending strap 9 fastened-to the" back of the The? strap 9 is so positioned and of be tilted approximately- 30fineither horizontal before the ends of the: strap 9 engage the rod 8 to stop the movement and hold the housing 5 in properpositi'on; against the pull of the 'lighting unit for taking photo-.- 5'is tipped: so 'that'the incanl, as' 2 is In using graphs the housing descent lamp-2 is centered above the post shown inrun linesin Fi g. 1, and the lamp r energized to illuminate the subject to be photographed. The incandescent lamp 2 may be of relatively high wattage, this is, 300 watts or more, to provide adequate and continuous illumination for focusing the camera. After the camera has been focused the housing 5 may be tipped in the opposite direction to move the lamp I comprising the flash tube 4 into exactly the same position previously occupied by the incandescent lamp 2. The housing 5 will then be in the position shown art-em diment cf the n:

in light broken lines in Fig. 1, The'flash tube 4 may then be energized to provide a bright flash Electric energy is supplied'to the lamps by insulated wires I4 fastened to the terminals 55 of the lamps I and 2 and passing through an opening I6 in the bottom of the housing 5 (Fig. 2) for connection to a suitable electric power source. 6 has a similar opening in registry with annular shoulders I8 which engages the plate I1 at the edges of the openings. The lamp shoulders I8 are also engaged by spring clips The main body portion 23 of the secured to the front plate I! by right angle strips 24 which may be body portion 23. The housing 5 may be removed from the post I for replacing its attached lamps I and 2 may then be removed from the housing 5 for servicing or lamp replacement by 'taking out the bolts holding strips 24. The lamps I and 2 may be released from the plate I I by removing clips I 9iv v The pivot pin 22 and the stop rod 8 are fastened to a pivot desire to secure by Letters Patent of the United States is:

1. A photographic lighting unit comprising a axis. 2. A photographic lighting unit comprising a EDWARD B. NOEL. REFERENCES CITED 

